WASHINGTON — Former President Bill Clinton’s aides were concerned early in his presidency about the health care overhaul effort, led by his wife, that never passed and a need to “soften” the image of Hillary Rodham Clinton, according to documents released Friday. Mrs. Clinton now is a potential 2016 presidential contender.

The National Archives released about 4,000 pages of previously confidential documents involving the former president’s administration, providing a glimpse into the struggles of his health care task force, led by the first lady, and other priorities such as the US economy and the North American Free Trade Agreement.

Hillary Clinton’s potential White House campaign has increased interest in Clinton Presidential Library documents from her husband’s administration during the 1990s and her own decades in public service. A former New York senator and secretary of state, Mrs. Clinton is the leading Democratic contender to succeed President Barack Obama, though she has not said whether she will run.

Friday’s documents release included memos related to the former president’s ill-fated health care reform proposal in 1993 and 1994, a plan that failed to win support in Congress and turned into a rallying cry for Republicans in the 1994 midterm elections. As first lady, Hillary Clinton chaired her husband’s health care task force, largely meeting in secret to develop a plan to provide universal health insurance coverage.

White House aides expressed initial optimism about her ability to help craft and enact a major overhaul of US health care.

“The first lady’s months of meetings with the Congress has produced a significant amount of trust and confidence by the members in her ability to help produce a viable health reform legislative product with the president,” said an undated and unsigned document, which was cataloged with others from April 1993. The document urged quick action, warning that enthusiasm for health reform “will fade over time.”

But the documents also showed the growing concerns among Clinton’s fellow Democrats in Congress. Lawmakers, it said, “going to their home districts for the August break are petrified about having difficult health care reform issues/questions thrown at them.”

By September 1993, Mrs. Clinton acknowledged the obstacles in a Capitol Hill meeting with House and Senate Democratic leaders and committee chairs. “I think that, unfortunately, in the glare of the public political process, we may not have as much time as we need for that kind of thoughtful reflection and research,” the first lady said, citing “this period of challenge.”

The documents also include detailed media strategy memos written as aides tried to soften Mrs. Clinton’s image.

Her press secretary, Lisa Caputo, encouraged the Clintons to capitalize on their 20th wedding anniversary as “a wonderful opportunity for Hillary” and also suggested she spend more time doing White House events celebrating first ladies of the past.

Placing Clinton in a historical context “may help to round out her image and make what she is doing seem less extreme or different in the eyes of the media,” Caputo wrote in a lengthy August 1995 memo about courting better press coverage as the president looked toward re-election.

Caputo also proposed the “wild idea” of having Clinton do a guest appearance on a popular sitcom of the day, “Home Improvement.”

Other documents offered a glimpse into the juggling of priorities early in Clinton’s first term.

A July 1993 memo shared among Clinton’s advisers sought guidance on how the administration should focus its attention on three major priorities: health care reform, the passage of the North American Free Trade Agreement and an initiative aimed at “reinventing government.”

“The president has repeatedly promised that health care will come after the economic package passes,” the memo from Clinton advisers Rahm Emanuel, Bob Boorstin, Mark Gearan and others said. “Surveys indicate that health care remains the second or third priority (behind job creation) for the vast majority of voters, but also that people fear reform is just another promise to be broken.”

“Our core supporters are rapidly losing patience and could block passage by throwing their support to alternative plans,” the memo warned.

The new documents offer only glimmers of Clinton’s internal national security deliberations. The most detailed material, contained in files from then-national security speechwriter Paul Orzulak, show top Clinton officials wrestling with how to deal with China’s emergence as a world financial power.

Notes from an undated meeting with National Security Adviser Samuel “Sandy” Berger show Berger pushing for China’s membership in the World Trade Organization despite concerns about human rights abuses.

A series of emails pertaining to the 9/11 Commission’s research into Clinton-era handling of al-Qaida attacks were all apparently withheld by Archives officials, citing national security and confidential restrictions. The only memo released was a single July 1998 email about whether to send a high-ranking diplomat to Minnesota with a presidential message to greet ailing Jordanian King Hussein. “Sounds like too much crepe hanging,” said a dismissive State Department official.